This summer YouTube made its biggest advance into sports by picking up rights to live stream the Olympics in various countries, but now it has gained a domestic foothold by partnering with the NBA to air D-League games. While the world isn't exactly beating down the doors to watch minor league basketball, this is YouTube's biggest pro sports deal so far. Neither the NBA nor Google will say how much the rights cost for it to air 350 or so of the league's 400 games, but we wouldn't expect to see YouTube bids for Monday Night Football. The NBA has long been a YouTube partner in other deals, and there were rumors last year that they were considering a deal for games, although right now Google seems to have its eye on ESPN3 instead of ESPN and will focus on niche sports and complementary programming. If you're a fan of the Fort Wayne Mad Ants or just trying to catch a peek at the next Jeremy Lin before everyone else, the broadcasts start Friday night (in HD) with four games. They're also accessible via team and league websites, as archived VOD on YouTube, through mobile apps for iOS and Android or, of course, on TV when they air on NBA TV and CBS Sports Network.